Windows 7 on Mac Pro 2006, fans stop working

[mikee1979]

I was wondering if anyone has had this problem or would be able to help me out. I've installed Windows 7 on my 2006 mac pro (mac pro is still in Leopard 10.5 and have'nt used any bootcamp drivers). Everything installed fine and seems to work ok but after about 30mins or so all the fans appear to shut down which can't be a good thing. Should I've installed it with Snow Leopard?

 

[slughead]

https://forums.macrumors.com/posts/9291376/